前端：JS获取浏览器类型类库

1、判断终端类型

    if (u.indexOf('Android') > -1 || u.indexOf('Linux') > -1) {
        //安卓手机
        // return "Android";
        return false
    } else if (u.indexOf('iPhone') > -1) {//苹果手机
        // return "iPhone";
        return true
    } else if (u.indexOf('iPad') > -1) {//iPad
        // return "iPad";
        return false
    } else if (u.indexOf('Windows Phone') > -1) {//winphone手机
        // return "Windows Phone";
        return false
    }else{
        return false
    }
}

2、判断是否是PC端

    var userAgentInfo = navigator.userAgent;
    var Agents = ["Android", "iPhone",
                "SymbianOS", "Windows Phone",
                "iPad", "iPod"];
    var flag = true;
    for (var v = 0; v < Agents.length; v++) {
        if (userAgentInfo.indexOf(Agents[v]) > 0) {
            flag = false;
            break;
        }
    }
    return flag;
}

3、判断浏览器类型

    var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
      //判断是否Opera浏览器
    var isOpera = userAgent.indexOf("Opera") > -1;   
    //判断是否IE浏览器
    var isIE = userAgent.indexOf("compatible") > -1 
    && userAgent.indexOf("MSIE") > -1 && !isOpera; 
    //判断是否IE的Edge浏览器
    var isIE11 = userAgent.indexOf('Trident') > -1 && 
    userAgent.indexOf("rv:11.0") > -1;
    var isEdge = userAgent.indexOf("Edge") > -1 
    && !isIE; 
    //判断是否Firefox浏览器
    var isFF = userAgent.indexOf("Firefox") > -1;   
    //判断是否Safari浏览器  
    var isSafari = userAgent.indexOf("Safari") > -1 && 
    userAgent.indexOf("Chrome") == -1; 
    //判断Chrome浏览器
    var isChrome = userAgent.indexOf("Chrome") > -1 && 
    userAgent.indexOf("Safari") > -1; 

    if (isIE) {
        var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
        reIE.test(userAgent);
        var fIEVersion = parseFloat(RegExp["$1"]);
        if(fIEVersion == 7) return "IE7"
        else if(fIEVersion == 8) return "IE8";
        else if(fIEVersion == 9) return "IE9";
        else if(fIEVersion == 10) return "IE10";
        else return "IE7以下"//IE版本过低
    }
    if (isIE11) return 'IE11';
    if (isEdge) return "Edge";
    if (isFF) return "FF";
    if (isOpera) return "Opera";
    if (isSafari) return "Safari";
    if (isChrome) return "Chrome";
}